EP3038757B1 - Method and apparatus for treating a feed stream for a flotation device - Google Patents

Method and apparatus for treating a feed stream for a flotation device Download PDF

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Publication number
EP3038757B1
EP3038757B1 EP14790720.8A EP14790720A EP3038757B1 EP 3038757 B1 EP3038757 B1 EP 3038757B1 EP 14790720 A EP14790720 A EP 14790720A EP 3038757 B1 EP3038757 B1 EP 3038757B1
Authority
EP
European Patent Office
Prior art keywords
dilution water
feed stream
water stream
stream
microbubbles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14790720.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3038757A1 (en
Inventor
Peter Gerard Bourke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Finland Oy
Original Assignee
Metso Outotec Finland Oy
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Filing date
Publication date
Application filed by Metso Outotec Finland Oy filed Critical Metso Outotec Finland Oy
Publication of EP3038757A1 publication Critical patent/EP3038757A1/en
Application granted granted Critical
Publication of EP3038757B1 publication Critical patent/EP3038757B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B03D1/025—Froth-flotation processes adapted for the flotation of fines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0084—Enhancing liquid-particle separation using the flotation principle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
    • B01D21/286—Means for gentle agitation for enhancing flocculation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B03D1/023—Carrier flotation; Flotation of a carrier material to which the target material attaches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/16—Flotation machines with impellers; Subaeration machines
    • B03D1/18—Flotation machines with impellers; Subaeration machines without air supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type

Definitions

  • WO 2012/061897 A1 discloses a method and apparatus for treating a feed stream in a flotation device comprising a tank and an impeller placed in the tank.
  • the apparatus 1 also includes reagent inlets 15, 16 located at selected points of the dilution water pipe 5.
  • the reagent inlet in the form of a Venturi pipe 15 delivers frother reagents into the dilution water stream 9 from a frother reagent line 17.
  • the frother reagents in the dilution water facilitates microbubble formation and also reduces the surface tension of the microbubbles created by the air sparge 6, preventing the microbubbles 8 from merging or coalescing into larger bubbles once they enter the feed pipe 4.
  • the frother Venturi pipe 15 delivers the frother reagents upstream of the air sparge 6 so as to prime the dilution water stream for microbubble generation.
  • the skim air flotation cell 3 operates with a near zero froth depth, unlike flotation devices employing a mechanical agitator, so that the targeted solids particles 10 have a chance to be recovered directly into the launder 29 and not be potentially lost if there was a deep froth zone formed where coarse particles will readily detach.
  • the froth surface is about 0 to 25 mm in depth, but should be very shallow and some slurry will overflow at times into the launder 29. Hence, the coarser solid particles do not drop back into the pulp zone as they are aided by the added buoyancy of the air bubbles plus the upward fluid velocity of the slurry provided by the auxiliary agitator 30c.
  • any of the features in the preferred embodiments of the invention can be combined together and are not necessarily applied in isolation from each other.
  • the feature of the microbubble generator being a cavitation tube and pump assembly and the feature of an angled feed pipe can be combined into a single apparatus. Similar combinations of two or more features from the above described embodiments or preferred forms of the invention can be readily made by one skilled in the art.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Water Treatments (AREA)
EP14790720.8A 2013-08-28 2014-08-28 Method and apparatus for treating a feed stream for a flotation device Active EP3038757B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20135868A FI20135868L (fi) 2013-08-28 2013-08-28 Menetelmä ja laite syöttövirtauksen käsittelemiseksi flotaatiolaitteeseen
PCT/IB2014/064105 WO2015028958A1 (en) 2013-08-28 2014-08-28 Method and apparatus for treating a feed stream for a flotation device

Publications (2)

Publication Number Publication Date
EP3038757A1 EP3038757A1 (en) 2016-07-06
EP3038757B1 true EP3038757B1 (en) 2022-06-08

Family

ID=49150971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14790720.8A Active EP3038757B1 (en) 2013-08-28 2014-08-28 Method and apparatus for treating a feed stream for a flotation device

Country Status (11)

Country Link
US (1) US10569196B2 (fi)
EP (1) EP3038757B1 (fi)
AU (1) AU2014313771B2 (fi)
CA (1) CA2922218C (fi)
CL (1) CL2016000418A1 (fi)
EA (1) EA029754B1 (fi)
FI (1) FI20135868L (fi)
NZ (1) NZ717343A (fi)
PE (1) PE20160233A1 (fi)
WO (1) WO2015028958A1 (fi)
ZA (1) ZA201601439B (fi)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3033482C (en) * 2016-08-15 2023-08-01 Outotec (Finland) Oy Flotation method
EP3512971B1 (en) 2016-09-14 2020-11-04 Outotec (Finland) Oy Method for recovering precious metal
CA2992652C (en) 2017-01-23 2021-03-23 Jun Long Nanobubble aided bitumen extraction from oil sand
EP3743213A4 (en) * 2018-01-23 2021-09-08 Outotec (Finland) Oy FLOTATION LINE
RU2736287C1 (ru) * 2019-11-01 2020-11-13 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный технологический институт (технический университет)" Микрореактор с закрученными потоками растворов реагентов
RU2748486C1 (ru) * 2020-03-20 2021-05-26 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный технологический институт (технический университет)" Микрореактор-смеситель многоступенчатый с закрученными потоками
US20230348811A1 (en) * 2022-04-29 2023-11-02 Quaker Chemical Corporation Systems and Methods for Removing Micro-Particles from a Metalworking Fluid

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787316A (en) * 1970-01-29 1974-01-22 Fmc Corp Foam flotation concentration of sewage
WO2004082841A1 (en) * 2003-03-17 2004-09-30 Outokumpu Technology Oy Auxiliary agitator for a flotation device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB694918A (en) * 1951-02-23 1953-07-29 F S Gibbs Inc Diffusion of gases in liquids
DE3032887A1 (de) * 1979-09-10 1981-04-02 Shinryo Air Conditioning Co., Ltd., Tokyo Verfahren und vorrichtung zum eindicken von schlamm
US4417985A (en) * 1981-11-06 1983-11-29 James Keane Treatment of waters with broad spectrum contaminants
JPS6044085A (ja) * 1983-08-22 1985-03-08 Shinryo Air Conditioning Co Ltd 汚泥の濃縮方法
US4738784A (en) * 1986-07-03 1988-04-19 Kazutoyo Sugihara Flotation device
AT410405B (de) 2001-09-17 2003-04-25 Andritz Ag Maschf Verfahren und vorrichtung zur abtrennung von störstoffen aus suspensionen durch flotation
FI20012538A (fi) 2001-12-21 2003-06-22 Outokumpu Oy Menetelmä ja laitteisto vaahdotuksen tehostamiseksi
DE10312670A1 (de) 2003-03-21 2004-10-07 Friz Biochem Gmbh Substrat zur kontrollierten Benetzung vorbestimmter Benetzungsstellen mit kleinen Flüssigkeitsvolumina, Substratabdeckung und Flusskammer
ITVI20070133A1 (it) 2007-05-09 2008-11-10 Comer Spa Cella di flottazione perfezionata per la depurazione di sospensioni fibrose
TWI580778B (zh) * 2007-06-19 2017-05-01 再生海藻能源公司 微藻類調理及濃縮的方法
EP2450106B1 (de) 2010-11-03 2016-06-01 Primetals Technologies Germany GmbH Flotationsapparat und Flotationsverfahren
WO2012061897A1 (en) 2010-11-11 2012-05-18 Minetometal Pty Ltd Separation and recovery of bubble particle aggregates
AU2012100021B4 (en) * 2012-01-10 2015-05-28 Eriez Manufacturing Co. Cavitation tube sparging system
FI124687B (fi) 2013-08-30 2014-12-15 Outotec Finland Oy Menetelmä ja hydraulinen alusta metallien elektrolyyttiseen rikastukseen eli elektroraffinointiin tarkoitettujen elektrolyysikennotankkien asentamiseksi säiliöhallissa sijaitsevalle tukirakenteelle ja hydraulisen alustan käyttö menetelmässä

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787316A (en) * 1970-01-29 1974-01-22 Fmc Corp Foam flotation concentration of sewage
WO2004082841A1 (en) * 2003-03-17 2004-09-30 Outokumpu Technology Oy Auxiliary agitator for a flotation device

Also Published As

Publication number Publication date
EP3038757A1 (en) 2016-07-06
CL2016000418A1 (es) 2016-10-14
EA029754B1 (ru) 2018-05-31
CA2922218C (en) 2022-01-04
FI20135868L (fi) 2015-03-01
ZA201601439B (en) 2020-05-27
AU2014313771B2 (en) 2016-10-27
US20160214036A1 (en) 2016-07-28
NZ717343A (en) 2020-03-27
US10569196B2 (en) 2020-02-25
CA2922218A1 (en) 2015-03-05
PE20160233A1 (es) 2016-05-10
AU2014313771A1 (en) 2016-03-24
EA201690257A1 (ru) 2016-08-31
WO2015028958A1 (en) 2015-03-05

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